Loud Chanting is very effective

“By serving others, by bringing them closer to Krsna–Krsna is especially merciful– and one gets forgiven for offenses. When one gets forgiven for offenses, the path of devotional service becomes very easy and one advances most quickly. Also, therefore loud chanting is more effective.”

His Holiness Srila Jayapataka Swami Gurumaharaj
12th September 1981
Miami, Florida